Products

Ultra High Vacuum (UHV) Compatible Superconducting Magnet Systems

Overview

Special superconducting magnet systems for UHV compatible superconducting (scanning probe microscopy and other experiments) are available with a variety of magnetic fields.

Standard Configuration

Special systems for UHV compatible (scanning probe microscopy and other experiments) are available with a variety of magnetic fields. These magnets can be either straight solenoids, split pair magnets with horizontal and vertical access, or double and triple magnets for operation with vertical or horizontal fields, or combined vector fields. These systems are supplied with He-4 or He-3 cryostats and are also available with dilution refrigerators for operation below He-3 temperatures. The sample may be introduced through the top or the bottom of the cryostat or through a horizontal bore of a split pair magnet. Many systems incorporate translation and rotation stages for sample loading, without warming up the magnet cryostat. Please feel free to contact Janis to discuss you requirement.

Other Configurations

Scanning Probe Microscope System
An 8 T split superconducting magnet system has been designed and built for a Scanning Tunneling Microscope with optical access to the microscope cooling stage. The microscope is top loaded into a UHV space that can be baked out to a temperature of 150 degrees Celsius without affecting the superconducting magnet or the rest of the cryostat. The system offers variable temperatures from below superfluid helium temperatures up to room temperature. Several variations are available on this basic design, enclosing bottom optical access, cryostats for Scanning Near Field Optical Microscopes, Atomic Force Microscopes, etc.

Model 85/8-KG-HE-3-BLSUHV-STM Ultra High Vacuum (UHV) Compatible Long Hold Time Superconducting Magnet System
Janis is pleased to offer a UHV compatible long hold time He-3 superconducting magnet system. It offers a hold time in excess of three days, at a temperature of less than 0.3 K, with no active pumping on the 1 K pot. The cryostat includes two magnets with a guaranteed 8.5 T vertical field and a 0.8 T horizontal field, with persistent current switches on both magnets.

The system also includes a 12" translation stage that allows translation of the sample out of the magnet bore for sample installation and replacement in the cold UHV environment.